© Copyright 2010 GISFI. All Rights Reserved.

QoS SIG Presentation QoE Measurements In A SeON Framework

Dr. Parag Pruthi NIKSUN Dr. Ashutosh Dutta NIKSUN

Date: December 14, 2010

 QoE => Perceived Quality of Service  Network Metrics

 Bit rate, delay, jitter, packet loss rate  Power consumption

 Application Metrics  Call setup delay  Failed calls, dropped calls, retransmission  MOS (Mean Opinion Score)

 Several standards groups …   ITU-T SG12   ITU X.902 (IP Telephony)   IETF – IPPM, DIFFSERV  3GPP – 3GPP TS 32.409 (IMS performance)

QoE Metrics

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QoE Metrics

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What is Frequency of Measurement?

Duration of Flow?

Minutes?

Seconds?

Sub-seconds?

Per-packet?

QoE Metrics – Time Effect

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QoE Metrics

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Require Multi-timescale

Measurements

QoE Metrics

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In A SeON Framework Such Timescale Shall Be Specifiable

& Negotiable

Details To Be Investigated By Working Group

QoE Metrics

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What To Measure?

Which Layer?

Which Application?

Which User?

Hop-by-hop or End-to-end?

Etc?

QoS is needed at multiple layers

IP CAN Caller (UE1)

diameter

SIP

GETS Call

HSS

GETS-Application

Server

P-CSCF

I-CSCF

S-CSCF

PCRF PCRF

P-CSCF

S-CSCF

Invite OK ACK

Called (UE2)

Managed IP���(Multi-Provider Network)

DNS/ENUM

DNS

RTP

L3 priority-based QoS

Wireless Access   UMTS   EvDO

  WiMAX   LTE

  Satellite

Wireline Access   Cable   DSL   Fiber

  Ethernet

Wireline Access   Cable   DSL   Fiber

  Ethernet

Wireless Access   UMTS   EvDO

  WiMAX   LTE

  Satellite

IMS

RAN

GW

GW

RAN

RAN IP CAN

9

SIP RPH Functions

Application-layer priority Queuing

L2 Priority –based QoS

Copyright © 2007 Telcordia Technologies. All Rights Reserved.

9

QoE Metrics

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IP Layer

UDP Layer

QoE Metrics

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Application HTTP

Application SSH

QoE Metrics

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User 1

User 2

QoE Metrics

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All Traffic Except Facebook

Facebook Only

QoE Metrics

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Require Multi-Layer Measurements

QoE Metrics

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Require DPI for Application

Classification

QoE Metrics

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In A SeON Framework Such Layer Shall Be Specifiable &

Negotiable

Details To Be Investigated By Working Group

Backbone

AdministrativeDomain B

L2 PoA

Corresponding Host

128.59.10.7

IPch

207.3.232.10

210.5.240.10

128.59.11.8

N2 N1 N1

N2

N1- Network 1 (802.11) N2- Network 2 ( CDMA/GPRS)

Configuration Agent

L3 PoA 207.3.232.10

Mobile Host

Authentication Agent

Authorization Agent

Registration Agent

Registration Agent

Administrative Domain A

Configuration Agent

Authorization Agent

Signaling Proxy

Authentication Agent

Signaling Proxy

Layer 3 PoA

L2 PoA Layer 2 PoA

Layer 2 PoA

L3 PoA

Experiencing QoS due to mobility in Campus net

128.59.9.6

L3 PoA

A

B C

D

900 ms media interruption

802.11 802.11

h/o delay 900 ms

802.11 802.11

4 Seconds media interruption h/o delay 4 s 18 Seconds media interruption h/o delay

18 s 22

Handover Event

Network discovery &

selection

Network attachment

Configuration Security association

Binding update

Media reroute

Channel discovery

L2 association

Router solicitation

Domain advertisement

Identifier acquisition

Duplicate Address

Detection

Address Resolution

Authentication (L2 and L3)

Key derivation

Identifier update

Identifier mapping

Binding cache

Tunneling

Buffering

Forwarding

Bi-casting/ Multicasting

Server discovery

Identifier Verification

Subnet discovery

P1 P2 P3 P4 P5 P6

P11

P13

P12

P21

P22

P23

P31

P32

P33 P41

P42 P51

P52

P53

P54

P61 P62

P63

P64

Where is the delay during handover process?

23

QoE Metrics

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Important to Specify Measurement Boundaries And Type of

Measurements For Abstraction From Implementation

What If Devices Are Virtual?

QoE Metrics

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Require Measurements

Between Elements

QoE Metrics

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In A SeON Framework Such (Logical) Measurements Shall Be Specifiable & Negotiable

Details To Be Investigated By Working Group

Cross-layer feedback helps to achieve QoE

Application (Audio, Video, Data)

Codecs (H.261) SAP SIP

RTP RTCP

H.323

TCP UDP

SCTP

SDP

MIP MIPv6 ICMP IGMP

PPP AAL 3/4

CDMA/GPRS/LTE 802.3 802.11

CSMA/CA CSMA/CD

SONET TX power Modulation

BER

SNR, switching LINK status

Routing Handoff

TCP Retransmission,

RTCP Feedback

Re-negotiate Bw, codec

Adaptive Application User Needs, Requirement

CIP

User

AAL3/4

RIP OSPF

Feedback-based service oriented architecture

IP CAN Caller (UE1)

diameter

SIP

GETS Call

HSS

GETS-Application

Server

P-CSCF

I-CSCF

S-CSCF

PCRF PCRF

P-CSCF

S-CSCF Invite OK

ACK

Called (UE2)

Managed IP���(Multi-Provider Network)

DNS/ENUM

DNS

RTP

Layer 3 control

Wireless Access   UMTS   EvDO

  WiMAX   LTE

  Satellite

Wireline Access   Cable   DSL   Fiber

  Ethernet

Wireline Access   Cable   DSL   Fiber

  Ethernet

Wireless Access   UMTS   EvDO

  WiMAX   LTE

  Satellite

IMS

RAN

GW

GW

RAN

RAN IP CAN

32

IMS-layer control

32

Layer 2 control

Performance Monitor

Multi-layer SON

Controller

Network Feedback

QoE Metrics

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Per flow Measurements (IntServ)

Aggregation Across Domains

Per flow guarantees

End-to-end

Scalability can be difficult? Should we investigate?

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QoS (SIG) deliverables - December

 Define several use case scenarios for communication in rural India  Focus QoS metrics for a specific set of applications

 Survey available techniques and framework being discussed in different SDOs

  Map the appropriate techniques and protocols to those use case scenarios

  Draft Best Current Practices for QoS Requirement for Rural India

Rural India Specific

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Still Needs Investigation